<script type="text/javascript">

	async function promise_coro(){
		return new Promise((resolve,reject)=>{
			setTimeout(()=>{
				console.log("121212111");
				resolve("成功!");
				// reject("err")
			},2000);
		})
	}

	async function main(){
		await promise_coro();
		console.log("run");
	}

	main();

</script>